Re: pinhole Re:Explosive Bubbles

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From: Paul Doherty (pauld@exploratorium.edu)
Date: Mon Nov 08 2004 - 12:12:39 PST 

Message-Id: <l0311073cbdb58310c123@[192.168.112.30]>
Date: Mon, 8 Nov 2004 12:12:39 -0800
From: Paul Doherty <pauld@exploratorium.edu>
Subject: Re: pinhole Re:Explosive Bubbles

On a further note

Never explode a hydrogen oxygen mixture in a balloon.

The detonation is so sudden that the protetive mechanisms of the ear cannot
function in time and the sound will lead to ear damage.

hydrogen by itself in a balloon undergoes a deflagration as oxygen slowly
mixes with the hydrogen, the resulting sound is moore of a "whomp" and for
a 9" diameter balloon will not produce ear damage.

A large ball of flame rises from the deflagration so the experiment should
not be done under a smoke detector.

Paul D

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